This necklace is available in 3 gemstone patterns. October birthdays, get ready to indulge yourself with this very unique October birthstone necklace! If you are looking for yellow gold or white gold, other customization, please contact us! Opal & Diamond Necklace * Center stone size: ≈3mm opal * Side stones: ≈1.5mm x2 G SI ethically sourced diamond * 16inch diamond cut chain * Solid 14k rose gold Pink Tourmaline & Diamond Necklace * Center stone size: ≈3mm pink tourmaline * Side stones: Elegant Pink Opal Round Necklace, Delicate Rose Gold Gemstone Necklaces, Dainty Rose Gold Opal Jewelry, Delicate Rose Gold Gemstone Necklace, Elegant Pink Opal Gemstone Necklace, Elegant Rose Gold Pink Opal Jewelry, Delicate Rose Gold Birthstone Necklace For Anniversary, Delicate Opal Gemstone Necklaces, Rose Gold Dainty Diamond Necklace With Birthstone